JP2014027855A - 電源回路 - Google Patents

電源回路 Download PDF

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Publication number
JP2014027855A
JP2014027855A JP2012168712A JP2012168712A JP2014027855A JP 2014027855 A JP2014027855 A JP 2014027855A JP 2012168712 A JP2012168712 A JP 2012168712A JP 2012168712 A JP2012168712 A JP 2012168712A JP 2014027855 A JP2014027855 A JP 2014027855A
Authority
JP
Japan
Prior art keywords
power supply
auxiliary winding
current flowing
current control
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2012168712A
Other languages
English (en)
Japanese (ja)
Inventor
Yukikazu Nohata
之一 農端
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Funai Electric Co Ltd
Original Assignee
Funai Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Funai Electric Co Ltd filed Critical Funai Electric Co Ltd
Priority to JP2012168712A priority Critical patent/JP2014027855A/ja
Priority to US13/937,303 priority patent/US20140028185A1/en
Priority to CN201310325869.9A priority patent/CN103582273A/zh
Publication of JP2014027855A publication Critical patent/JP2014027855A/ja
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Dc-Dc Converters (AREA)
JP2012168712A 2012-07-30 2012-07-30 電源回路 Pending JP2014027855A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2012168712A JP2014027855A (ja) 2012-07-30 2012-07-30 電源回路
US13/937,303 US20140028185A1 (en) 2012-07-30 2013-07-09 Power supply circuit
CN201310325869.9A CN103582273A (zh) 2012-07-30 2013-07-30 电源电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012168712A JP2014027855A (ja) 2012-07-30 2012-07-30 電源回路

Publications (1)

Publication Number Publication Date
JP2014027855A true JP2014027855A (ja) 2014-02-06

Family

ID=49994202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012168712A Pending JP2014027855A (ja) 2012-07-30 2012-07-30 電源回路

Country Status (3)

Country Link
US (1) US20140028185A1 (zh)
JP (1) JP2014027855A (zh)
CN (1) CN103582273A (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208753972U (zh) * 2018-04-30 2019-04-16 上海晶丰明源半导体股份有限公司 保护电路、驱动系统及芯片
FR3097384B1 (fr) * 2019-06-17 2021-07-16 Commissariat Energie Atomique Dispositif d'alimentation à partir d'une tension alternative

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187410A (en) * 1991-04-18 1993-02-16 Konica Corporation Electronic flash device
DE69930897T2 (de) * 1998-06-25 2006-11-23 ORC Manufacturing Co., Ltd., Chofu Anordnung zum Betreiben einer Entladungslampe
TWI384898B (zh) * 2008-06-18 2013-02-01 Delta Electronics Inc 可調光之發光二極體驅動電路
US8143800B2 (en) * 2009-06-22 2012-03-27 O2Micro, Inc. Circuits and methods for driving a load with power factor correction function
US8742677B2 (en) * 2010-01-11 2014-06-03 System General Corp. LED drive circuit with a programmable input for LED lighting
US20130049621A1 (en) * 2010-03-04 2013-02-28 O2Micro Inc. Circuits and methods for driving light sources
CN102364991B (zh) * 2011-02-01 2012-10-24 杭州士兰微电子股份有限公司 一种原边控制led恒流驱动开关电源控制器及其方法

Also Published As

Publication number Publication date
US20140028185A1 (en) 2014-01-30
CN103582273A (zh) 2014-02-12

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